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3 years ago

Answer This!!!!!! I'll give brainliest to whoever gets it right. And 100 Points!

Physics

1 answer:

n200080 [17]3 years ago

6 0

Answer: Time (days) = 88, the (mass) = 0.2180

Explanation:

Time (days) = 88, the (mass) = 0.2180

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Find the position and velocity of an object moving along a straight line with the given acceleration, initial velocity, and init

yulyashka [42]

To solve this problem we will apply the conventions related to the cinematic movement theorem, for which the kinematic equations of linear motion are equally detached. We will use the speed and position equations to determine the general formula according to the given values.

To velocity function we have

$v(t) = v(0)+\int^t_0 a(x) dx$

Our values are,

$a(x) = -9.8$

$v(0) = 20$

$s(0) = 0$

Replacing at this equation and solving we have that the equation for the velocity would be,

$v(t) = 20+\int^t_0 -9.8 dx$

$v(t) = 20-\int^t_0 9.8 dx$

$v(t) = 20-9.8x|^t_0$

$v(t) = 20-9.8(t-0)$

$v(t) = 20-9.8t$

Therefore the velocity function is $v(t) = 20-9.8t$

At the same time for the position function:

$s(t) = s(0) +\int^t_0 v(x) dx$

Replacing we have that

$s(t) = s(0) +\int^t_0 20-9.8x dx$

$s(t) = 0 +20x-9.8\frac{x^2}{2}|^t_0$

$s(t) = (20t-9.8\frac{t^2}{2})-(20\cdot 0 -9.8 \frac{0^2}{2})$

$s(t) = 20t-9.8\frac{t^2}{2}$

Therefore the position function is

$s(t) = 20t-9.8\frac{t^2}{2}$

5 0

3 years ago

How do they make pickle sunflower seeds?

Kobotan [32]

Preheat oven to 350°F. Spray large baking sheet with cooking spray.

Place dill, garlic powder, onion powder, salt, sugar and ascorbic acid in small bowl and stir to combine.

Generously season sunflower seeds with dill mixture and toss to combine. Taste and season again, if needed.

Arrange seeds on baking sheet and transfer to oven to brown for 10 to 15 minutes, tossing every 5 minutes to prevent burning.

Remove from oven, let cool and store in airtight container.

7 0

3 years ago

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Which units are used to measure both velocity and speed? Check all that apply. m/s d/t km/h mph lph

GaryK [48]

The units used to measure speed and velocity are as follows: m/s, Km/h, and mph.

5 0

4 years ago

Read 2 more answers

What is a material that reduces the flow of heat by conduction, convection, and radiation?

Oksi-84 [34.3K]

The answer is a insulator

4 0

4 years ago

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To practice Problem-Solving Strategy 21.1 Coulomb's Law. Three charged particles are placed at each of three corners of an equil

Salsk061 [2.6K]

Answer:

The force felt by charge 3 is F=(-5.6*10⁻⁶,3.36⁻⁵)N

Explanation:

As the superposition principle applies to static charges, we can find the net electric force as the sum of the two forces felt by q3.

Looking at the drawing and knowing that they form an equilateral triangle of lenght 4 we can conclude that each internal angle is 60°.

So, the positions in our coordinate system are:

$r_1=(0,0)\\r_2=(4\ cos(60\°),4\ sin(60\°))\\r_3=(4,0)\\$

Now using Coulomb's force:

$F_{ij}=\frac{-kq_iq_j}{d^2}(\vv{r}_j-\vv{r}_i)$

Where d=4, q1 = -7.8*10⁻⁹C, q2 = -15.6 *10⁻⁹C, q3 = 8.0 *10⁻⁹C, k=8.98*10⁹, e0=8.8*10¹⁰:

Replacing we get 2 equations:

$F_{13}=\frac{-kq_1q_3}{d^2}(\vv{r}_1-\vv{r}_3)=\frac{-kq_1q_2}{d^2}(-0.04\ cos(60\°),-0.04\ sin(60\°))\\\\F_{23}=\frac{-kq_2q_3}{d^2}(\vv{r}_1-\vv{r}_3)=\frac{-kq_1q_2}{d^2}(0.04-0.04\ cos(60\°),-0.04\ sin(60\°))\\$

To work with the sam

F=∑F_i=3.5*10⁻⁴(0.023,0.032)+7*10⁻⁴(-0.016,0.032)=

=((3.5*10⁻⁴-7*10⁻⁴)*0.016,(3.5*10⁻⁴+7*10⁻⁴)*0.032)=

F=(-5.6*10⁻⁶,3.36⁻⁵)N

7 0

3 years ago